@Ali_Ahsan, you have neither answered my questions nor provided the information I requested. Your screen shot is not of the Edit screen for a sales invoice. We have no idea what it might show. Nor have you explained how anything in Accoun ts receivable supposedly changed.
If you don’t provide the requested information, no one can help.
The only thing I can tell is that you are probably using the program incorrectly in some way. According to your screen shot, you have 55 purchase invoices, but 3,414 journal entries. It is highly unliklely that any business would have so many journal entries in Manager, especially after having purchased so few times from suppliers. Journal entries should be quite rare. This could be related to whatever undefined problem you have.